Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response

Chow Lee; Lupan Oleg; Chai Guangyu; Khallaf Hani; Ono Luis K.; Roldan Cuenya Beatriz; Tiginyanu Ion; Ursachi Veaceslav; Shontya Viktor; Schulte Alfons

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2018-10-16 12:14

SM ISO690:2012

CHOW, Lee, LUPAN, Oleg, CHAI, Guangyu, KHALLAF, Hani, ONO, Luis K., ROLDAN CUENYA, Beatriz, TIGINYANU, Ion, URSACHI, Veaceslav, SHONTYA, Viktor, SCHULTE, Alfons. Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response. In: Sensors and Actuators, A: Physical, 2013, vol. 189, pp. 399-408. ISSN 0924-4247. DOI: https://doi.org/10.1016/j.sna.2012.09.006

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Sensors and Actuators, A: Physical

Volumul 189 / 2013 / ISSN 0924-4247

Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response

DOI:https://doi.org/10.1016/j.sna.2012.09.006

Pag. 399-408

Chow Lee¹², Lupan Oleg¹³, Chai Guangyu¹, Khallaf Hani¹, Ono Luis K.¹, Roldan Cuenya Beatriz¹, Tiginyanu Ion⁴³, Ursachi Veaceslav⁴³, Shontya Viktor³, Schulte Alfons⁵

¹ University of Central Florida,
² Green Technology Research Center, Chang Gung University, Tao-Yuan,
³ Technical University of Moldova,
⁴ Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova,
⁵ University of Florida

Disponibil în IBN: 23 martie 2018

Rezumat

Detection of chemicals and biological species is an important issue to human health and safety. In this paper, we report the hydrothermal synthesis at 95 °C of Cu-doped ZnO low-dimensional rods for room-temperature (RT) sensing applications and enhanced sensor performances. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Raman and photoluminescence are used to characterize the material properties. To demonstrate the suitability of the Cu-doped ZnO rods for gas sensor applications and for comparison with pure ZnO, we fabricated a double rod device using Focused Ion Beam. The responses of pure-ZnO and Cu-doped ZnO rods studied in exactly the same condition are reported. We found that Cu-ZnO sensors have enhanced RT sensitivity, faster response time, and good selectivity. Miniaturized Cu-ZnO rod-based sensors can serve as a good candidate for effective H₂ detectors with low power consumption.

Cuvinte-cheie
Crystal, Cu-doping, Microrod, sensor, ZnO

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